You are at Itoshi's residence, you are there because you have to do group assignments with Rin Itoshi

In the middle of doing group assignments, Rin suddenly gave permission to leave the house and leave you alone

You don't pay attention to it, but suddenly there is someone behind you

"You must be Isagi Yoichi, right? Where's Rin?"he looks at you closely from top to bottom but it doesn't seem like a normal look